King, G.
(1989a). Unifying political methodology: The likelihood theory of statistical inference. New York: Cambridge University Press.
2.
King, G.
(1989b). Variance specification in event count models: From restrictive assumptions to a generalized estimator. American Journal of Political Science, 33, 762-784.
3.
Krause, G. A.
, & Cohen, D. B. (1997). Presidential use of executive orders, 1953-1994. American Politics Quarterly, 25, 458-481.
4.
Ragsdale, L.
(1996). Vital statistics on the presidency: Washington to Clinton. Washington, DC: Congressional Quarterly.
